The much maligned love story
Everybody's complained about this but I thought I'd point out:
1) Hathaway's been in prison how many years and presumably hasn't touched a woman all that time. I would assume no conjugal visits because he apparently doesn't have anyone.
2)Chen Lien tells him he looks different than his pictures which implies she may have had some fixation/fascination with him before they even met.
Couple these circumstances with the fact that they just escaped from death together (a rather intimate experience full of adrenaline ) and it's a little easier to buy a romance developing. Mann is a subtle director and you have to read between the lines with a lot of his stuff. This is a flawed film, however. It seems like Mann is experimenting with how much he can go without explaining. He's actually been doing that for years-throwing the viewer into a situation without setup like "a day in the life" approach.